My computer was hacked and data stolen. After this I noticed a cache file and .dropbox file became visible to me in my list of folders and files. In opening properties the .dropbox file security tab listed 3 group or user names: 1. SYSTEM, 2. my name and email, and 3. administrators and my computer name/administrators. I have a dropbox account on my phone which does not show these files and a friend's Dropbox files does not show them either. Should these names other than mine be deleted; I'm pretty gunshy and worried that Dropbox has been compromised on my computer. I have just the basic, free plan.